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Disaster Accident Reference Libraries

Page 9 of about 121 Articles
Tabulata
2012-04-03 17:00:56

Tabulata is a family of extinct tabulate corals. These corals lived entirely during the Paleozoic era, being found from the Ordovician to the Permian stages. There are about 300 known genera of tabulate corals, of which Aulopora, Favosites, Halysites, Heliolites, Pleurodictyum, Sarcinula and Syringopora are the most common in the fossil record. These corals were mostly found in the shallow...

Astrocoeniidae
2012-04-03 14:18:34

Astrocoeniidae is a family of stony corals endemic to the waters around Papua New Guinea and northern Australia. Their habitats are steep slopes where strong currents rise from below, in crevices and below overhangs. These are reef-building colonial corals containing an algae known as zooxanthallae. These algae typically encrust corals up to 20 inches in diameter. On reef slopes, where...

Alcyoniidae
2012-04-03 14:15:16

Alcyoniidae is a family of leathery corals that occur globally in temperate and tropical seas. These reef dwellers are often found in wave-exposed areas of reef crests, less turbid waters in lagoons, on steep slopes, under overhangs, and at depths of 100 feet and deeper. A colony of leathery coral is stiff, hard, and inflexible. It is composed of tiny polyps projecting from a shared...

STS-36
2012-03-24 09:43:51

Atlantis launched from Kennedy Space Center on February 28, 1990 at 2:50 AM EST and landed at Edwards Air Force Base on March 4 at 10:08 AM PST. The shuttle orbited 72 times at an altitude of 132 nautical miles at an inclination of 62 degrees and travelled 1.9 million miles. The mission lasted 4 days, 10 hours, 18 minutes, and 22 seconds. This was a Department of Defense mission and all...

Clostridium perfringens
2011-04-15 14:02:16

Clostridium perfringens (formerly known as C. welchii) is a Gram-positive, rod-shaped, anaerobic, spore-forming bacterium of the genus Clostridium. It is always present in nature and is a normal component of decaying vegetation, marine sediment, the intestinal tract of humans, other vertebrates, insects, and soil. It can be a human pathogen and also harmlessly ingested. Commonly it is...

Campylobacter jejuni
2011-04-14 16:27:41

Campylobacter jejuni is a species of curved, helical shaped, non-spore forming, Gram-negative microaerophilic, bacteria commonly found in animal feces. It is one of the most common causes of human gastroenteritis in the world. This food poisoning can be severely debilitating but rarely life-threatening. It has also been linked to Guillain-Barre syndrome which generally develops two to three...

Rift Valley Fever
2011-02-23 20:29:04

Rift Valley Fever (RVF) is a viral zoonosis that causes fever. It is spread through infected mosquitoes. It was first reported in 1915 in Kenya were it infected livestock. Outbreaks occur across sub-Saharan Africa, and in the "˜77-"˜78 outbreak several million people were infected and thousands died during a violent epidemic. In 1998 the virus killed 400 Kenyans and in 2000 an outbreak...

Mumps Virus
2011-02-17 17:26:28

Mumps virus causes mumps which is a common childhood disease characterized by swelling of the parotid glands and other epithelial tissues causing high morbidity in some cases deafness. Infection is currently restricted to humans while the virus is transmitted by direct contact, droplet spread, or via contaminated objects. It is a vaccine preventable disease although significant outbreaks have...

Influenza A Virus
2011-02-17 15:02:05

Influenza A virus causes influenza in birds and some mammals. It is a genus of the Orthomyxoviridae family of viruses. Although the virus is uncommon several strains have been isolated from wild birds. Some can cause severe disease in domestic poultry and sometimes in humans. They are negative sense, single-stranded, segmented RNA viruses. Each subtype has mutated into a variety of strains with...

Cypovirus
2011-01-11 10:27:42

Cypoviruses or CPV, are a genus of viruses in the Reoviridae family. The virions structure is similar to other reoviruses with a genome composed of 10 segments of double-stranded RNA. The virions are embedded in a protein matrix in order to form structures referred to as polyhedra or occlusion bodies. Cypoviruses have only been isolated from insects. They have more in common with the widely...

Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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